Function Highs_getColsByMask 

pub unsafe extern "C" fn Highs_getColsByMask(
    highs: *const c_void,
    mask: *const HighsInt,
    num_col: *mut HighsInt,
    costs: *mut f64,
    lower: *mut f64,
    upper: *mut f64,
    num_nz: *mut HighsInt,
    matrix_start: *mut HighsInt,
    matrix_index: *mut HighsInt,
    matrix_value: *mut f64,
) -> HighsInt

Get data associated with multiple columns given by a mask.

This function is identical to Highs_getColsByRange, except for how the columns are specified.

@param mask An array of length [num_col] containing a 1 to get the column and 0 otherwise.

@returns A kHighsStatus constant indicating whether the call succeeded.